Integration of inspiratory and expiratory intra-abdominal pressure: a novel concept looking at mean intra-abdominal pressure

Annals of Intensive Care

Table 2 Multiple regression analysis looking for independent variables influencing MIAP

	Unstandardized coefficients		Standardized coefficients			95.0% Confidence interval for B
Model	B	Standard error	Beta	t	Significance	Lower bound	Upper bound
(Constant)	−0.27	0.20		−1.4	0.164	−0.66	0.11
PEEP	0.01	0.00	0.01	2.1	0.040	0.00	0.01
ΔP _alv	0.01	0.01	0.02	1.5	0.133	0.00	0.02
I:E ratio	0.48	0.04	0.04	12.3	0.000	0.40	0.56
IAP_ee	0.99	0.01	0.86	144.6	0.000	0.98	10.01
ΔIAP	0.35	0.03	0.16	11.3	0.000	0.29	0.41
TAI	0.00	0.00	0.01	1.1	0.259	0.00	0.01
C _ab	0.00	0.00	−0.01	−1.6	0.105	0.00	0.00

PEEP, positive end-expiratory pressure; P _alv, alveolar pressure; I:E ratio, inspiratory-to-expiratory ratio; IAP_ee, end-expiratory IAP; TAI, thoraco-abdominal index of transmission; C _ab, abdominal wall compliance.